Method and apparatus for molding reenforced-composition studding



Feb. 16 1926. 1,573,502

c. A. PETERS METHOD AND APPARATUS FOR MOLDING HEENFORCED COMPOSITION STUDDING Filed April '5, 1924 Patented Feb. 16, 19216.

UNITED STATES PATENT OFFICE.

CEARLES ALBERT PETERS, OE DOWNEr, CALIFORNIA, AssIGNoRTo 4PETERS HOLDING r COMPANY, A CORPORATION OE' CALIFORNIA.

METHOD lANI) ArPARATUs FOR MOLDING REENEoRoED-COMPOSITIQN sTUDDING.

Application nleaApn/i s, 1924. serial No. 704,382.

tion filed on even date he1)ewith,and the general Object thereof is tO provide a method and apparatus for molding such studding in great quantities..

An object is to provide a means and method for forminga composition studding of -a b'ody of plastic material interposed between reenforci'ng side facing sheets with reenforcements embedded therein and arranged with terminals of the wire reenforce-A -ments projecting from the ends and edges offthe studding.

A more particular Objectis to provide a I method and apparatus of the character view of the mold of my'apparatus showingone of the facing `sheets in the bottom of,

stated which is simple, inexpensive and highly eiicieht.

Vith the foregoing objects in view, to-

gether with such other. objects andadvantages as may subsequently appear, my invention resides in the parts, and in the combination, construction and arrangement of parts as hereinafter described and claimed, afnd illustratedbyway of example, inthe accompanying drawings, ignwheich- Figure 1 is a'perspective viewof my molding apparatus; A i.

Figure 2 is a fragmentary perspective View of one end of the mold of my apparatus partly broken away and showing one of the facing sheets in the bottom 4of the mold.`

Figure 3 is a fragmentary. perspective the mold and three transverse reenforcing rods in position inthe mold for molding.

V Figure 4 is a perspective view of the mold of lmy apparatus, showing oneof the facing sheets in thebottom Of the mold and the longitudinal and two of the transverse reenforcing rods in molding position in the mold. f

' supply roll 7.

vthe studdin Figure 5 is a fragmentary perspective view ofthe'mold of my apparatus showin a studding of plastic material molded ther 1n.

Figure 6 is a fragmentary longitudinal section of my molding apparatus.

Figure 7 is a perspective View of one end of a plastic studding molded in my apparatus.

' Figure 8 is a perspective view of a plastic Astudding molded in my apparatus.

My apparatus preferably comprises a plurality of molds 1, a mold conveyor 2, a composition container 3, a hopper 4, a` gage roller 5, guide rollers 6, anda facing sheet The mold 1 comprises a bottom wall 8, end walls 9 and side walls 10. Said end walls are hinged at their lower ends to the ends of said bottom wall by hinges 1l, so that they may swing outwardly to open the mold. The side walls 10 are made in a plurality of sections 12 which are hinged at their lower edges -to the side edges of the bottom 8 by hingesv 13 so that they may swing outward to open the mold. The end walls 9 are each provided with a air "of spaced slots 14 extending downward y from the upper edge of said walls to receive the longitudinal reenforcing rods 15 of the studding to hold the same inposition in the mold for molding the same in the studding. The side walls 10 are provided with, a plurality of spaced slots 16 extending downwardly from' the upper edge 'thereof to receive-the transverse reenforcing rods 17 of the studding to hold said rods in position in the mold for molding the same in the studding. The reenforcing rods 15 and 17 may be of any suitable form but are preferably of serpentine formation and said rods may be placed in the mold. so that the concave sides of the rods 15 rest in the concave sidesn of the rods 17. thus interlocking said rods when molde i'n'the composition body 18 of i as shown in Figure?.

-The conveyor 2 comprisesa frame 20, a plurality of horizontal rollers 21 journaledv in said frame, and a conveyor belt 22 Aeupported on said rollers.l The gageroller 5 1s journaled in the forward endof the hopper 4. The rollers 6 are journaled in the 1upper part of the frame 2 0. The facing container to the hopper 4. A gate 28 maybe mounted in the hopper 4 for shutting off the delivery of the material 27 from said hopper through the delivery opening 25 into the mold 1 therebelow on the conveyor belt .22 when the rear end of the mold is4 "conveyed past said opening so that no matef mold 1 (see Figure 2).

v material being shut off by the gate l28 benallyv rial will drop on the belt between the molds, which are placed on said belt longitudinally in spaced relation, as shown in Figure 6. Pins 28 are secured 011 the belt 22 between which the molds are placed on the belt, whereby the said molds lare -held in longitudinally spaced relation on the belt.

In practicing my invention I first place a facing sheet/ of paper 30 on the bottom of the I next place the jransverse reenforcing rods 17 in the mold ransversely within the slots 16 with the ends of the rods projecting outwardly through the side walls 10 of the mold (see Figure 3). I next place the longitudinal reenforcing rods 15 longitudinally in the mold within the slots 14-with the ends of said rods projectinthrough the end walls 9 of the mold (see igure 4). A plurality of moldsthus prepared are then placed on lthe belt 22 between ythe pins 28 in longitudip'aced relation. l,Thebelt being driven towar 28 being opened, the plastic material flows out ofthe container 3 through the door 26 into the hopper 4 and out of said hopper through delivery opening 26 into the molds as-they are conveyed past said opening, the

tween molds so that the material will not drop onto the belt between the' molds. The

I i Vplastic material is 'gaged by the gage roller 5 so that the upper level'of the material coincides with the upper edges of the mold and a facing sheet 31 1s unwound from the roll 7 between the rollers 6 and theupper surface of the material, which rollers `press the sheet rmly against the upper side of the studrng. I

The rolls 6 are. formed with peripheral flanges 32 which project alongside the outer faces of the side walls 1'0 of the molds and serve'to hold the-'walls 1,0 in an upright position as the molds are advanced under the rollers. As a studding is molded in a mold, the mold is removed from the belt 22, the end wallsy 9 and side walls 10 arepswung down on their hinges) 1'1 and I3, and the studding is then removed from the mold, with the facing sheets 30 and 31 secured on the sides of the lastic body 18" and the long ritudinal-l reen orcing rods 15 and the transvrse reenforcing rods'17 molded longithe right and the door 26 and gate tudinally and transversely in said body with the rods 15 projecting out of the ends and the rods 17 projecting out of the edges of said body. y i

Having described my invention, I claim- 1. The method of y forming reenforced plastic studding which consists in placing a permanent facing sheet in the bottom of a mold, placing reenforcements in said mold, Yconveying the mold past a point of delivery, delivering plastic material at said point into the mold and rolling saidr plastic material down into the mold and around and below said reenforcements, and placing a permanent facing sheet on the molded plastic material.

2. The method of-forming reenforced plastic studdin'g which consists in positioning" a serie's of longitudinal and transverse reenforcement bars in molds in supported spaced relation to the bottom of the mold, conveying said molds in spaced relation past a point of delivery, and delivering the plastic material at said point into said molds around and below said reenforcements.

The method of forming plastic studding which consists in placing a facing sheet in the bottom of a studding mold, conveying a plurality of such molds past a point of delivery, delivering plasticmaterial atsaid point of delivery into saidymolds as they pass thereby, and' placing atffacing sheet on theupper surface of said plastic material.

4. The, method of4 forming. reenforced plastic studding which consists in lacing ia facing sheet in thev bottom of a mol placing'- reenforcements 1n said mold, conveying a plurality of such molds past a point of delivery, and delivering plastic material into said molds as they pass said point.

5. The method of forming plastic studding comprising placing a permanent facing sheet in the bottom of a mold, delivering plastic material into said mold, and placing a permane t facing sheet -upon the upper face of said plastic material, `,whereby both of said facing sheets will 1pelim'anently adhere to the molded materia l -6. The method ofv forming plastic studding which consists -in placing a facing sheet in the bottom of a mold, conveying al plurality of such molds past a point of delivery, delivering plastic material at said point `into said molds as they pass, and placing a single facing sheet upon the surface of ,said material in all of said molds.

'7. Inan apparatus/for forming studdin a conveyor, a hopper, a plurality of stu ding molds placed on said conveyor into rial in the molds as they travel beyond. said i hopper.

ding molds placed on said conveyor intoY which plastic material is deliveredl from said hopper as said molds are conveyed thereunder, each of said molds having side walls hinged to swing outwardly, means for holding said side walls stationary while-the molds are being advanced, and a roller for gaging the upper surface of the plastic material in the molds and compressing said material.

9. In an apparatus for forming reenforced studding, a mold including a bottom wall, end walls and side walls, said end walls having slots extending downwardly from their upper edges to hold longitudinal reenforcing rods longitudinally in the mold,

each of said side walls being formed of a.

plurality of hinged sections.

10. In -an apparatus for forming studdin a mold including a bottom wall, end wal s and side walls, said side walls having slots extending downwardly from the upper edges. thereof tohold transverse reenforcmg rods transversely in said mold, each of said side walls being formed of a-plurality of hinged sections. f

11` In an apparatus for forming studdin a mold including a bottom wall, end

wal s and side walls, said end walls having` slots extending downwardly from the upper edge thereof to hold longitudinal reenforcing rods longitudinally 1n the mold and said side walls having slots extending ownwardly from the upper edge thereof to hold l the transverse reenforcin rods transversely in the mold, eachof sai side walls being vformed ofaplurality of hinged sections.

12. In an apparatus as disclosed, a mold comprising a bottom wall, side walls, end walls, said side walls and said end walls being hinged to said bottom wall to swing down therefrom to open the mold, said side walls including a plurality of independently hinged sections.

V13. In apparatus for forming studding, a conveyor, a plurality of molds adapted to be carried upon said conveyor, each of said molds having hinged side walls, and a roller beneath' which said molds pass, the roller having anges for engaging the hinged side walls of the molds to maintain the same in operative position.

14. In .an apparatus for forming studdinr, a conveyor, a hopper, a plurality of studding molds placed on said conveyor into which plastic material is delivered from said hopper as said molds are conveyed thereunder, and means for rolling a facing sheet on the upper surface of the plastic material in the molds. l

15. In an apparatus forl forming studding, a mold including a bottom wall, end Walls and side walls, said end walls having slots extending downwardly from the upper edges thereof to hold longitudinal reenforcing rods longitudinally in the mold in spaced relation to the bottom thereof, and said side walls having slots extending downwardly from the upper edges thereof to hold transverse reenforcing rods transversely in 4the mold in spaced/relation to the bottom thereof; s'aid slde walls being hinged to said bottom walls to swing outwardly and down- 'I5 

